*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.wh{
    width: 100%;
    height:100%;
}
ol,ul{
    list-style: none;
}


header{
    .wh;
    height: 64px;
    background-color: lightblue;
    padding: 10px;
    position: fixed;
    top: 0;
//  display: none;
    .ip{
        position: relative;
        width: 70%;
        margin: 0 auto;
        height: 50px;
        border-radius: 100px;
        top:5px;
        width:33px;
    }
    input{
        display: inline-block;
       border-radius:30px !important;
       
       height: 33px;
    }
    a{
        position: absolute;
        width: 33px;
        height: 33px;
        line-height: 33px;
        text-align: center;
        background-color: white;
        border-radius:30px ;
        right: 0px;
        top: 1px;
        z-index: 1000;
        border: 1px solid #CCCCCC;
        color: lightblue;
        &:hover{
            background-color: lightgray;
            color: white;
            border-color: lightgray;
            transition: background-color color border-color  linear;
            transition-duration: 1s;
        }
    }
}

.rot{
    animation: rot 1s linear;
}

@keyframes rot{
    from{transform:rotateY(0)}
    to{transform:rotateY(180deg)}
}



section {
    width:90%;
   
    margin: 64px auto 0;
    ul{
        width: 100%;
        margin: 0 auto;
        
       li{
           width:30%;
           float: left;
           height: 150px;
           border: 1px solid lightgrey;
           border-radius:5px ;
//         box-shadow: 0 0 5px 5px lightgrey;
           margin: 10px 5px;
           transform-style:  preserve-3d;
           
           a{
                 display: inline-block;
                 .wh;
            }
       } 
    }
    
}















